Current U.S.A. patent laws that relate to technology

Research the Internet regarding these issues:

  1. What recent patent law changed the way patents are filed? Why was this done? (Make sure this is a recent law and not an old law, it is so important)
  2. What are the problems with the current U.S.A. patent laws that relate to technology?
  3. List 3 advantages that incumbent corporations have and 3 disadvantages that startups have in getting a patent.
  4. Why are patent trolls bad for innovation?